survey
Detecting Palaeolithic Activity Areas Through Electrical Resistivity Survey: An Assessment from Vale de Óbidos, Portugal
Submitted by landviser on Tue, 05/14/2013 - 17:39- Login or register to post comments
- Google Scholar
- BibTex
- RIS
Soil Science
Submitted by landviser on Thu, 08/02/2012 - 18:40Applications of electrical geophysical methods in classic Soil Science (Pedology, Soil Genesis and Classification) - browse the links and maps on this page to find out more...
Applications of LandMapper handheld for near-surface soil surveys and beyond
Submitted by landviser on Tue, 05/08/2012 - 18:14On-the-go sensors, designed to measure soil electrical resistivity (ER) or electrical conductivity (EC) are vital for faster non-destructive soil mapping in precision agriculture, civil and environmental engineering, archaeology and other near-surface applications. Compared with electromagnetic methods and ground penetrating radar, methods of EC/ER measured with direct current and four-electrode probe have fewer limitations and were successfully applied on clayish and saline soils as well as on highly resistive stony and sandy soils. However, commercially available contact devices, which utilize a four-electrode principle, are bulky, very expensive, and can be used only on fallow fields. Multi-electrode ER-imaging systems applied in deep geophysical explorations are heavy, cumbersome and their use is usually cost-prohibited in many near-surface applications, such as forestry, archaeology, environmental site assessment and cleanup, and in agricultural surveys on farms growing perennial horticultural crops, vegetables, or turf-grass. In such applications there is a need for accurate, portable, low-cost device to quickly check resistivity of the ground on-a-spot, especially on the sites non-accessible with heavy machinery.
Four-electrode principle of EC/ER measurements
Our equipment utilizes well-known four-electrode principle to measure electrical resistivity or conductivity (Fig).
Locations
